Chuck



bodymg the invenion,

CHUCK.

meme?.

Application eine .my ei,

To all who/m1 it c'nay conocen:

Be it known time 'Bc-NGT M. if?. 'ii-imo SON e citizen of the Unilsei Sii-etes, residing ait altord, in the county of -eitfo'c and. State of Connecticut, im e invented ceiein new and useful mpi'ovements in Cin-Loksa of which the foiiowing is e speciicacion.

The invention reiates especieiiy to chucks; ci' the magnetic type, end the object oi che invention is to provide c magnetic chuck having impoved means whereby Work can oe secmed mechanicaliy to the chuck eithei in association with the megneic action ci: independently thereof, and Wiieieby siepe, guides or fixtures may be secuied to the chuck io assist in the location of Wok hee on. En the accompanying drawing inve iiiusraed the embodiment of che invention which new deem preferccie, one ci be understood hhct ehe 25min? is co considered es .meeiy illustrative alici noi; defining or limiting fue Soep*v venion, the accompanying cie-. iied upon foi thaoupose,

@i the chewing:

Figure 'i is e pien vie W of e. ciencia vFig, f is a cross section A chuck emooyi adapted for a Wide vere peiticuiaiy weii su i ing machine sucia7 1:

forth in my copeniiig oiicn :fece grinding mecni ce, i BI" iied on even date iieewie. T .foi'e shown in e part o of such e grinding machine.

The grinding machine is pmx/'ici a, mein freine l having; e. veticei epetuic 2. The chuck has o.

Lite 3 which is cicuier in outiine which is provided with ciegoeifiing tru'nnion which its the aoesei bene ing apertue 9). The bed plete 3 locs nected to it 'a ring 5 ivi-ich has sliding engegement with a ioec'fi'lg surface 5 of ie frame i, this beefing sui-fece serving 'to support the bed piate and he ca c' thereby. Piefemioiy the Ting 5 is pio on its peipheiy with geefjteeifn 7 by oeecf of which the c nick may oe turned. ably, es shown, he ceci piajce a; e; nuci gyoove 8 omed therein neer i iiphery, and into this goove their Specification of Letters aten.

` Wih magnetic coils 'which may "ce "r11,

lem serial No. 243,535@

e ienge 9 on be i'amc L This prf )cci-111g mm the groove seves to prevent Wmer o1' other o'eign matie fom entering the space beneath the chuck. Y/oecmed to che bed piece 3 segoene l0 iormed of sleei or othe magnetic mov sciips 1.1 of brass or other euiabie non miignetic meterme The exece shape o eine grooves and of 'Jie s?. ics which iii; 5h

fmstitutes no peut of ihe present im'ei The arrangement shown in the ion.

'mg is eaisiectory. Below die noo-megneic ships 'il eachof the segments is povicied coils i srips 18 [are iush with che too euicces oi' iie segmcis i0. .Each of the. siips i Hinged iefiiai'y, as shown, iff sr connececi the bed omed .c cacio o' ehe e sich i9 which is pre'feeio "silmaeci une which is pieefeoify a its Preferably ci; the cf-iei of chuck nece is provided u 120 which is sui'eioij secueci in piecei as,I foi' inssence, by means of screws 2l, and which is providef wih a centiei epci'ture it xviii 4ce undeieood ii use the chuck canioe used ns c chucl; in "he usm memie. A piece oi" mcgneiicmcfici can ce laid upon ai part-of +he chuck. urfece and een be mcgnemceiiy heid by eill g fgizing the cos o1" the segments 1U however, it is desirable for any reason to hold `the Work mechanically, either inconjunction with the magnetic action or independentljY thereof, this can he readily effect- .ed by means of 'T-bolts entered in the rT-slots 19. Frequently, even when the Wor is to be held solely by magnetic :ictionf'it is desirable'to provide stops or gages to assist in properly positioning the Work on the chucl. These stops or gages een be clamped to the chuck bymeans of T-bolts engaging the T-slots 19. When necessary, the hole 22 can be used to assist in holding a stop or other xture 1n place.

inasmuch as the slots 19 extend radially, a -bolt engaged in'one of them can be placed at any desired position from the axis. lnasmuch, as the slots are open at their ends, they canbe readily cleaned should dirt and dbris accumulate therein. t will be seen that the several strips 18 are separate from the magnetic segments and. that they vare ca pable of being removed 'or renewed. necessary.

What l claim is: l. A rotatable chuclr` comprising a plurality of magnetic segments and a plurality or' separate and removable radial strips arranged respectively between adjacent segments each of the strips having a longitudinal nIlm-slot therein.

2. A rotatable chuck comprising a bed plate., a plurality or separate magnetic segments secured to the bed plate independently of each other, and a plurality of sep arate and removable radial strips arranged respectively between adjacent segments and secured to 'the bed plate independently of the segments, each of the strips having a longitudinal T-slot therein.

ln testimony' whereof, l hereto aiiix my signature.

-BENGT lvl. W. HANSN.

when 

